Hi,

today I upgraded to version 2.2.12 under Debian Squeeze. I saw some people on the list they had the same problems with version 2.2.11, but which should have been fixed in version 2.2.12.

My logfile shows:

.. Mar 28 08:25:01 mailstore dovecot: pop3-login: Login: user=<ul@domain.net>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=34568, secured, session=<Jp6RmaX1YAB/AAAB> Mar 28 08:25:06 mailstore dovecot: pop3(ul@domain.net pid:34568 session:<Jp6RmaX1YAB/AAAB>): Fatal: master: service(pop3): child 34568 killed with signal 11 (core dumped) ...

I made some more dubugging and I found that the pop3 process crashed on the "uidl" command. Here my output from telnet session:

.. root@mailstore: # telnet localhost 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK Dovecot ready. user ul@domain.net +OK pass PASS +OK Logged in. list +OK 5 messages: 1 3492 2 21924 3 3525 4 3472 5 3273 . uidl Connection closed by foreign host. ...

Listing massages or retrieving messages works normally. Only on "uidl" command the services crashes.

I made a backtrace.

-----> start backtrace <----- Core was generated by `dovecot/pop3'. Program terminated with signal 11, Segmentation fault. #0 0x00007f9dd8ca488d in vfprintf () from /lib/libc.so.6 (gdb) bt full #0 0x00007f9dd8ca488d in vfprintf () from /lib/libc.so.6 No symbol table info available. #1 0x00007f9dd8cc6732 in vsnprintf () from /lib/libc.so.6 No symbol table info available. #2 0x00007f9dd904d0db in str_vprintfa (str=0x11aa4f8, fmt=0x409184 "%u %s", args=0x7ffffab4fff0) at str.c:155 args2 = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 0x7ffffab500e0, reg_save_area = 0x7ffffab50010}} init_size = 4231558 pos = 0 ret = <value optimized out> ret2 = <value optimized out> __FUNCTION__ = "str_vprintfa" #3 0x00000000004055ff in client_send_line (client=0x11d1e50, fmt=<value optimized out>) at pop3-client.c:678 str = 0x11aa4f8 _data_stack_cur_id = 4 va = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7ffffab500e0, reg_save_area = 0x7ffffab50010}} ret = <value optimized out> __FUNCTION__ = "client_send_line" #4 0x00000000004073cd in list_uidls_saved_iter (client=0x11d1e50, ctx=0x11da3c0) at pop3-commands.c:666 found = true #5 list_uids_iter (client=0x11d1e50, ctx=0x11da3c0) at pop3-commands.c:693 str = <value optimized out> permanent_uidl = <value optimized out> found = <value optimized out> failed = <value optimized out> #6 0x0000000000407d88 in cmd_uidl (client=0x11d1e50, name=<value optimized out>, args=0x408880 "") at pop3-commands.c:874 ctx = 0x0 seq = <value optimized out> #7 client_command_execute (client=0x11d1e50, name=<value optimized out>, args=0x408880 "") at pop3-commands.c:938 No locals. #8 0x0000000000405870 in client_handle_input (client=0x11d1e50) at pop3-client.c:739 _data_stack_cur_id = 3 line = <value optimized out> args = 0x408880 "" ret = <value optimized out> #9 0x00007f9dd903c3d6 in io_loop_call_io (io=0x11d2760) at ioloop.c:388 ioloop = 0x11b2740 t_id = 2 #10 0x00007f9dd903d45f in io_loop_handler_run (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x11b2aa0 event = 0x11b3900 list = 0x11b44d0 io = 0x51 tv = {tv_sec = 9, tv_usec = 999326} msecs = <value optimized out> ret = 1 i = 0 call = false __FUNCTION__ = "io_loop_handler_run" #11 0x00007f9dd903c348 in io_loop_run (ioloop=0x11b2740) at ioloop.c:412 __FUNCTION__ = "io_loop_run" #12 0x00007f9dd8fea953 in master_service_run (service=0x11b25d0, callback=0x409186) at master-service.c:566 No locals. #13 0x0000000000404ac7 in main (argc=1, argv=0x11b2390) at main.c:277 set_roots = {0x4094e0, 0x0} login_set = {auth_socket_path = 0x11aa050 "/var/run/dovecot/auth-master", postlogin_socket_path = 0x0, postlogin_timeout_secs = 60, callback = 0x404ca0 <login_client_connected>, failure_callback = 0x404c50 <login_client_failed>, request_auth_token = 0} service_flags = <value optimized out> storage_service_flags = MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT username = 0x0 c = <value optimized out> (gdb) quit -----> end backtrace <-----

And at least my pop3 configuration part:

-----> start config <----- protocol pop3 { mail_plugins = " quota mail_log notify acl zlib stats" pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_lock_session = yes pop3_logout_format = bytes_sent=%o top=%t/%p, retr=%r/%b, del=%d/%m, size=%s uidl_hash=%u session=<%{session}> pop3_reuse_xuidl = yes } -----> end config <-----

Setting "pop3_reuse_xuidl = no" has noe effect. Always the same crash.

Thanks and regards Urban Loesch